Lead(II) Hybrid Materials from 3‐ or 4‐Phosphonobenzoic Acid

Abstract

International audienceThree new hybrid organic-inorganic materials Pb3(H2O)2(p-PO3C6H4CO2)2 (2), Pb6(H2O)2(p-PO3C6H4CO2)4 (3), and Pb5(p-PO3C6H4COOH)2(p-PO3C6H4CO2)2 (4) have been synthesized by hydrothermal treatment involving PbII salts and a rigid heterodifunctional precursor 4-phosphonobenzoic acid {p-PO(OH)2C6H4COOH}. The use of 3-phosphonobenzoic acid {m-PO(OH)2C6H4COOH} as another rigid organic precursor is also reported. These two organic building units possess two distinct functional groups (phosphonic acid and carboxylic acid) both having the aptitude to generate chemical bonds with a metallic precursor. The structures of the produced materials have been solved by means of single-crystal X-ray diffraction data. It was observed that the use of the 4-phosphonobenzoic acid produces the hybrids 2, 3, or 4 that possess a layered structure. In these three materials, the inorganic planes are linked together via an organic bridge. For 2, 3 and 4 the understanding of the stacking of the organic molecules within the layer, the influence of the electronic lone pair and the water molecules is discussed.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009

Silver-Based Hybrid Materials from meta- or para-Phosphonobenzoic Acid: Influence of the Topology on Silver Release in Water

“…Recently we reported the first example of an efficient bactericidal silver-based hybrid in which phosphonic and carboxylate functional groups tether the organic part with the silver salt in a 3D arrangement. 32 This work was carried out within a context that aimed to study that aimed to examine the use of rigid phosphonic acid derivatives 33 , 34 as building blocks for the construction of crystalline hybrids under hydrothermal conditions to produce fluorescent, 35 thermally stable 36 and non-centrosymmetic materials. 37,38 For Through the study of the construction synthesis of silver-based hybrids we produced materials were produced with which couldthe potentially of acting as a reservoir of silver ions i.e.…”

Charge-Assisted Hydrogen-Bonded Networks of NH4+ and [Co(NH3)6]3+ with the New Linker Anion of 4-Phosphono-Biphenyl-4′-Carboxylic Acid

“…Various metal complexes have been synthesized with a ligand from deprotonated 4-phosphono-benzoic acid, including the metals barium [22], cobalt [23], copper [23], europium [24], lead [20], lithium [25], silver [26], strontium [27], thorium [28], titanium [29], uranium [28] and zinc [30,31]. However, the extended biphenyl-based variant 4-phosphono-biphenyl-4'-carboxylic acid (H 3 BPPA) was unknown so far (Scheme 1).…”

“…Carboxy-phosphonates (Scheme 1) can be seen as intermediates between pure carboxylates and pure phosphonates, sharing synergies of both ligand classes. Carboxy-phosphonates can form porous or 3D metal-ligand networks [18][19][20]. Weng et al described a 3D zinc carboxy-phosphonate, ZnPC-2, as a material for CO 2 adsorption [21].…”

Layered Simple Hydroxides Functionalized by Fluorene‐Phosphonic Acids: Synthesis, Interface Theoretical Insights, and Magnetoelectric Effect

“…The X n− anion located in the interlayer space may be substituted by a large variety of molecules via anionic exchange reaction. [45] The rigidity results from a direct connection of the phosphonic acid on an aromatic [46] or heteroaromatic ring [47] acting as a rigid molecular platform. As for the related compounds layered double hydroxides, [M 1-x 2+ M' x 3+ (OH) 2 ] x+ (X n− ) x/n .mH 2 O without anchoring of X − anions onto the layers, only a few works on the intercalation of molecules bearing phosphonic acids have been reported.…”

“…[43] Over the recent years, efforts were made on the use of rigid phosphonic acids for the solvothermal one-pot synthesis of hybrid compounds, [44] with the aim to assess the consequences of this rigidity on the topology of the obtained systems. [45] The rigidity results from a direct connection of the phosphonic acid on an aromatic [46] or heteroaromatic ring [47] acting as a rigid molecular platform. When low symmetrical phosphonic acid compounds like 3-phosphonobenzoic acid (which features an aromatic ring with prochiral faces) are reacted with copper salts in solvothermal conditions non-centrosymmetric crystals are obtained.…”